The breeding age heifer contributes greatly to the future success of a dairy. She can also be the source of lost opportunities. Joe Dalton, University of Idaho, addressed the importance of getting young...

In some livestock species, multiple births are preferred, but that certainly is not the case in dairy cattle. "Nobody likes to have twins. Twins are an incredible problem," said Paul Fricke, a dairy cattle...

Welcome to A.I. breeding 101 - a virtual college class held here today! We have come a long way since the 1970s when fixed-time A.I. was first attempted in our industry. In those days, prostaglandin F2?...

In 1989, a major breakthrough in sperm sexing was reported by USDA scientists in rabbits. Insemination of rabbit does with Y-chromosome-bearing sperm resulted in 81 percent males, whereas insemination...

When was the last time you or your A.I. technicians had an A.I. refresher course? A.I. breeding is not like riding a bicycle - once you master the skill of cycling you have no need of a refresher course....

What's the best timed A.I. program? There are so many synchronization programs that can be used on my dairy herd. My question for a future Artificial Breeding column is which synchronization program would...

Traditionally, bull fertility is difficult to evaluate in the laboratory, although many attempts have been made to assess differences among bulls. Part of this difficulty exists because sperm are exposed...

In the 1980s, a breakthrough in semen sexing technology was made by USDA researchers in the Lawrence Livermore Laboratory in California. The patents for this technology were licensed to a company named...